analyze-entries ( entries word-names -- errors word-histogram message-histogram )
Furnace framework » Logging framework » Log analysis

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Vocabulary
logging.analysis

Inputs

entries	a sequence of log entries
word-names	a sequence of strings

Outputs

errors	a sequence of log entries
word-histogram	an assoc
message-histogram	an assoc

Word description
Analyzes log entries:

•	Errors (entries with level ERROR or CRITICAL) are collected into the errors sequence.
•	All logging words are tallied into word-histogram - for example, this can tell you about HTTP server hit counts.
•	All words listed in word-names have their messages tallied into message-histogram - for example, this can tell you about popular URLs on an HTTP server.

Definition

USING: kernel namespaces sequences ;

IN: logging.analysis

: analyze-entries
    ( entries word-names -- errors word-histogram message-histogram )
    [
        word-names set V{ } clone errors set
        H{ } clone word-histogram set
        H{ } clone message-histogram set [ analyze-entry ] each
        errors get word-histogram get 10 recent-histogram
        message-histogram get 10 recent-histogram
    ] with-scope ;